Eragrostis gangetica

(Roxb.) Steud.
Common names: Slimflower lovegrass
Introduced
Synonyms: Eragrostis stenophylla Eragrostis flamignii
Treatment appears in FNA Volume 25. Treatment on page 87.

Plants annual; tufted, without innovations, without glands. Culms (12) 25-75 cm, usually erect, sometimes geniculate and branched below, glabrous, reddish. Sheaths glabrous, apices usually with 0.3-2.2 mm hairs; ligules 0.2-0.4 mm, ciliate; blades (5) 7-17 cm long, 1-3 mm wide, flat to folded basally, involute apically, abaxial surfaces glabrous, adaxial surfaces scabridulous, sometimes with scattered hairs near the base. Panicles (6) 11-21 cm long, 1-13 cm wide, ovate to somewhat contracted, open; primary branches 0.5-12 cm, (12) 15-20 per culm, appressed or diverging up to 60° from the rachises, often capillary, naked near the base; pulvini glabrous; pedicels 0.3-5 mm, mostly appressed. Spikelets 2-4.6 mm long, 0.9-2 mm wide, narrowly ovate, greenish-yellow to plumbeous and with a reddish-purple tinge, with 5-15 florets; disarticulation acropetal, paleas persistent. Glumes lanceolate to ovate, membranous; lower glumes 0.4-0.9 mm; upper glumes 1-1.3 mm, occasionally 3-veined; lemmas 1-1.3 mm, broadly ovate, membranous, often reddish-purple, lateral-veins conspicuous, often greenish, apices acute; paleas 0.9-1.1 mm, hyaline, keels scabridulous, apices obtuse; anthers 2, 0.1-0.2 mm, reddish-purple. Caryopses 0.3-0.5 mm, subglobose to obovoid, not grooved, translucent, faintly striate, reddish-brown. 2n = 80.

Discussion

Eragrostis gangetica is an Asian species that now grows in the southeastern United States. It can be found in the sandy margins of ponds, roadsides, and ditches, at 0-100 m, usually in association with Pinus, Taxodium distichum, Rynchospora, and Steinchisma hians. Eragrostis gangetica is similar to E. bahiensis, but differs from that species in its annual habit and shorter spikelets, lemmas, anthers, and caryopses.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Eragrostis gangetica"
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
Obtuse (?) +  and Acute (?) +
Paul M. Peterson +
(Roxb.) Steud. +
1 (?) +  and 3 (?) +
multiple +, , +  and single +
not +  and glabrous +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
7 cm70 mm <br />0.07 m <br /> (17 cm170 mm <br />0.17 m <br />) +
pubescent +  and glabrous +
flat +  and folded basally +
1mm;3mm +
not disarticulating +
not spikelike +
pubescent +  and glabrous +
reddish-brown +
subglobose +  and obovoid +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
triangular +  and dome--shaped +
sometimes longer +
membranous +
Slimflower lovegrass +
geniculate +
25 cm250 mm <br />0.25 m <br /> (75 cm750 mm <br />0.75 m <br />) +
not woody +
Fla. +, Miss. +  and La. +
not waisted +
capillary +
pistillate +  and staminate +
sometimes longer +
5 +  and 15 +
round +  and compressed +
reduced +
persistent +  and deciduous +
shorter or longer +
subtending +
lanceolate +  and ovate +
membranous +
uncinate +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
paniculate +  and racemose +
hollow +  and solid +
scabridulous +
not absent +
(1)3(5)-veined +
0.1 cm1 mm <br />0.001 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
membranous +
sometimes longer +
ciliate +  and ciliolate +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
membranous +
inconspicuous +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
concealed +  and prominent +
2 +  and 1 +
persistent +
2-keeled +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
11cm +  and 21cm +
1 cm10 mm <br />0.01 m <br /> (13 cm130 mm <br />0.13 m <br />) +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
dry +  and fleshy +
diverging;appressed +
0.5 cm5 mm <br />0.005 m <br /> (12 cm120 mm <br />0.12 m <br />) +
spikelike +
Introduced +
greenish-yellow +  and plumbeous and with a reddish-purple tinge +
0.2 cm2 mm <br />0.002 m <br /> (0.46 cm4.6 mm <br />0.0046 m <br />) +
1 +  and 60 +
0.9mm +  and 2mm +
1 (?) +  and 3 (?) +
compound +  and simple +
2 (?) +  and 3 (?) +
Eragrostis stenophylla +  and Eragrostis flamignii +
Eragrostis gangetica +
Eragrostis +
species +
membranous +
0.1 cm1 mm <br />0.001 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
7 +  and 13 +
rhizomatous +  and stoloniferous +
aquatic +  and terrestrial +
dioecious +  and synoecious +